| 1 | ## compare_shells: bash dash mksh zsh
|
| 2 | ## oils_failures_allowed: 0
|
| 3 |
|
| 4 | #### Lazy Evaluation of Alternative
|
| 5 | i=0
|
| 6 | x=x
|
| 7 | echo ${x:-$((i++))}
|
| 8 | echo $i
|
| 9 | echo ${undefined:-$((i++))}
|
| 10 | echo $i # i is one because the alternative was only evaluated once
|
| 11 | ## status: 0
|
| 12 | ## STDOUT:
|
| 13 | x
|
| 14 | 0
|
| 15 | 0
|
| 16 | 1
|
| 17 | ## END
|
| 18 | ## N-I dash status: 2
|
| 19 | ## N-I dash STDOUT:
|
| 20 | x
|
| 21 | 0
|
| 22 | ## END
|
| 23 |
|
| 24 | #### Default value when empty
|
| 25 | empty=''
|
| 26 | echo ${empty:-is empty}
|
| 27 | ## stdout: is empty
|
| 28 |
|
| 29 | #### Default value when unset
|
| 30 | echo ${unset-is unset}
|
| 31 | ## stdout: is unset
|
| 32 |
|
| 33 | #### Unquoted with array as default value
|
| 34 | set -- '1 2' '3 4'
|
| 35 | argv.py X${unset=x"$@"x}X
|
| 36 | argv.py X${unset=x$@x}X # If you want OSH to split, write this
|
| 37 | # osh
|
| 38 | ## STDOUT:
|
| 39 | ['Xx1', '2', '3', '4xX']
|
| 40 | ['Xx1', '2', '3', '4xX']
|
| 41 | ## END
|
| 42 | ## OK osh STDOUT:
|
| 43 | ['Xx1 2', '3 4xX']
|
| 44 | ['Xx1', '2', '3', '4xX']
|
| 45 | ## END
|
| 46 | ## OK zsh STDOUT:
|
| 47 | ['Xx1 2 3 4xX']
|
| 48 | ['Xx1 2 3 4xX']
|
| 49 | ## END
|
| 50 |
|
| 51 | #### Quoted with array as default value
|
| 52 | set -- '1 2' '3 4'
|
| 53 | argv.py "X${unset=x"$@"x}X"
|
| 54 | argv.py "X${unset=x$@x}X" # OSH is the same here
|
| 55 | ## STDOUT:
|
| 56 | ['Xx1 2 3 4xX']
|
| 57 | ['Xx1 2 3 4xX']
|
| 58 | ## END
|
| 59 |
|
| 60 | # Bash 4.2..4.4 had a bug. This was fixed in Bash 5.0.
|
| 61 | #
|
| 62 | # ## BUG bash STDOUT:
|
| 63 | # ['Xx1', '2', '3', '4xX']
|
| 64 | # ['Xx1 2 3 4xX']
|
| 65 | # ## END
|
| 66 |
|
| 67 | ## OK osh STDOUT:
|
| 68 | ['Xx1 2', '3 4xX']
|
| 69 | ['Xx1 2 3 4xX']
|
| 70 | ## END
|
| 71 |
|
| 72 | #### Assign default with array
|
| 73 | set -- '1 2' '3 4'
|
| 74 | argv.py X${unset=x"$@"x}X
|
| 75 | argv.py "$unset"
|
| 76 | ## STDOUT:
|
| 77 | ['Xx1', '2', '3', '4xX']
|
| 78 | ['x1 2 3 4x']
|
| 79 | ## END
|
| 80 | ## OK osh STDOUT:
|
| 81 | ['Xx1 2', '3 4xX']
|
| 82 | ['x1 2 3 4x']
|
| 83 | ## END
|
| 84 | ## OK zsh STDOUT:
|
| 85 | ['Xx1 2 3 4xX']
|
| 86 | ['x1 2 3 4x']
|
| 87 | ## END
|
| 88 |
|
| 89 | #### Assign default value when empty
|
| 90 | empty=''
|
| 91 | ${empty:=is empty}
|
| 92 | echo $empty
|
| 93 | ## stdout: is empty
|
| 94 |
|
| 95 | #### Assign default value when unset
|
| 96 | ${unset=is unset}
|
| 97 | echo $unset
|
| 98 | ## stdout: is unset
|
| 99 |
|
| 100 | #### ${v:+foo} Alternative value when empty
|
| 101 | v=foo
|
| 102 | empty=''
|
| 103 | echo ${v:+v is not empty} ${empty:+is not empty}
|
| 104 | ## stdout: v is not empty
|
| 105 |
|
| 106 | #### ${v+foo} Alternative value when unset
|
| 107 | v=foo
|
| 108 | echo ${v+v is not unset} ${unset:+is not unset}
|
| 109 | ## stdout: v is not unset
|
| 110 |
|
| 111 | #### "${x+foo}" quoted (regression)
|
| 112 | # Python's configure caught this
|
| 113 | argv.py "${with_icc+set}" = set
|
| 114 | ## STDOUT:
|
| 115 | ['', '=', 'set']
|
| 116 | ## END
|
| 117 |
|
| 118 | #### ${s+foo} and ${s:+foo} when set -u
|
| 119 | set -u
|
| 120 | v=v
|
| 121 | echo v=${v:+foo}
|
| 122 | echo v=${v+foo}
|
| 123 | unset v
|
| 124 | echo v=${v:+foo}
|
| 125 | echo v=${v+foo}
|
| 126 | ## STDOUT:
|
| 127 | v=foo
|
| 128 | v=foo
|
| 129 | v=
|
| 130 | v=
|
| 131 | ## END
|
| 132 |
|
| 133 | #### "${array[@]} with set -u (bash is outlier)
|
| 134 | case $SH in dash) exit ;; esac
|
| 135 |
|
| 136 | set -u
|
| 137 |
|
| 138 | typeset -a empty
|
| 139 | empty=()
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| 140 |
|
| 141 | echo empty /"${empty[@]}"/
|
| 142 | echo undefined /"${undefined[@]}"/
|
| 143 |
|
| 144 | ## status: 1
|
| 145 | ## STDOUT:
|
| 146 | empty //
|
| 147 | ## END
|
| 148 |
|
| 149 | ## BUG bash status: 0
|
| 150 | ## BUG bash STDOUT:
|
| 151 | empty //
|
| 152 | undefined //
|
| 153 | ## END
|
| 154 |
|
| 155 | # empty array is unset in mksh
|
| 156 | ## BUG mksh status: 1
|
| 157 | ## BUG mksh STDOUT:
|
| 158 | ## END
|
| 159 |
|
| 160 | ## N-I dash status: 0
|
| 161 | ## N-I dash STDOUT:
|
| 162 | ## END
|
| 163 |
|
| 164 |
|
| 165 | #### "${undefined[@]+foo}" and "${undefined[@]:+foo}", with set -u
|
| 166 | case $SH in dash) exit ;; esac
|
| 167 |
|
| 168 | set -u
|
| 169 |
|
| 170 | echo plus /"${array[@]+foo}"/
|
| 171 | echo plus colon /"${array[@]:+foo}"/
|
| 172 |
|
| 173 | ## STDOUT:
|
| 174 | plus //
|
| 175 | plus colon //
|
| 176 | ## END
|
| 177 |
|
| 178 | ## N-I dash STDOUT:
|
| 179 | ## END
|
| 180 |
|
| 181 | #### "${a[@]+foo}" and "${a[@]:+foo}" - operators are equivalent on arrays?
|
| 182 |
|
| 183 | case $SH in dash) exit ;; esac
|
| 184 |
|
| 185 | echo '+ ' /"${array[@]+foo}"/
|
| 186 | echo '+:' /"${array[@]:+foo}"/
|
| 187 | echo
|
| 188 |
|
| 189 | typeset -a array
|
| 190 | array=()
|
| 191 |
|
| 192 | echo '+ ' /"${array[@]+foo}"/
|
| 193 | echo '+:' /"${array[@]:+foo}"/
|
| 194 | echo
|
| 195 |
|
| 196 | array=('')
|
| 197 |
|
| 198 | echo '+ ' /"${array[@]+foo}"/
|
| 199 | echo '+:' /"${array[@]:+foo}"/
|
| 200 | echo
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| 201 |
|
| 202 | array=(spam eggs)
|
| 203 |
|
| 204 | echo '+ ' /"${array[@]+foo}"/
|
| 205 | echo '+:' /"${array[@]:+foo}"/
|
| 206 | echo
|
| 207 |
|
| 208 |
|
| 209 | ## BUG mksh STDOUT:
|
| 210 | + //
|
| 211 | +: //
|
| 212 |
|
| 213 | + //
|
| 214 | +: //
|
| 215 |
|
| 216 | + /foo/
|
| 217 | +: //
|
| 218 |
|
| 219 | + /foo/
|
| 220 | +: /foo/
|
| 221 |
|
| 222 | ## END
|
| 223 |
|
| 224 | # Bash 2.0..4.4 has a bug that "${a[@]:-xxx}" produces an empty string. It
|
| 225 | # seemed to consider a[@] and a[*] are non-empty when there is at least one
|
| 226 | # element even if the element is empty. This was fixed in Bash 5.0.
|
| 227 | #
|
| 228 | # ## BUG bash STDOUT:
|
| 229 | # + //
|
| 230 | # +: //
|
| 231 | #
|
| 232 | # + //
|
| 233 | # +: //
|
| 234 | #
|
| 235 | # + /foo/
|
| 236 | # +: /foo/
|
| 237 | #
|
| 238 | # + /foo/
|
| 239 | # +: /foo/
|
| 240 | #
|
| 241 | # ## END
|
| 242 |
|
| 243 | ## BUG zsh STDOUT:
|
| 244 | + //
|
| 245 | +: //
|
| 246 |
|
| 247 | + /foo/
|
| 248 | +: //
|
| 249 |
|
| 250 | + /foo/
|
| 251 | +: /foo/
|
| 252 |
|
| 253 | + /foo/
|
| 254 | +: /foo/
|
| 255 |
|
| 256 | ## END
|
| 257 |
|
| 258 | ## N-I dash STDOUT:
|
| 259 | ## END
|
| 260 |
|
| 261 |
|
| 262 |
|
| 263 | #### Nix idiom ${!hooksSlice+"${!hooksSlice}"} - was workaround for obsolete bash 4.3 bug
|
| 264 |
|
| 265 | case $SH in dash|mksh|zsh) exit ;; esac
|
| 266 |
|
| 267 | # https://oilshell.zulipchat.com/#narrow/stream/307442-nix/topic/Replacing.20bash.20with.20osh.20in.20Nixpkgs.20stdenv
|
| 268 |
|
| 269 | (argv.py ${!hooksSlice+"${!hooksSlice}"})
|
| 270 |
|
| 271 | hooksSlice=x
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| 272 |
|
| 273 | argv.py ${!hooksSlice+"${!hooksSlice}"}
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| 274 |
|
| 275 | declare -a hookSlice=()
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| 276 |
|
| 277 | argv.py ${!hooksSlice+"${!hooksSlice}"}
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| 278 |
|
| 279 | foo=42
|
| 280 | bar=43
|
| 281 |
|
| 282 | declare -a hooksSlice=(foo bar spam eggs)
|
| 283 |
|
| 284 | argv.py ${!hooksSlice+"${!hooksSlice}"}
|
| 285 |
|
| 286 | ## STDOUT:
|
| 287 | []
|
| 288 | []
|
| 289 | ['42']
|
| 290 | ## END
|
| 291 |
|
| 292 | # Bash 4.4 has a bug that ${!undef-} successfully generates an empty word.
|
| 293 | #
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| 294 | # ## BUG bash STDOUT:
|
| 295 | # []
|
| 296 | # []
|
| 297 | # []
|
| 298 | # ['42']
|
| 299 | # ## END
|
| 300 |
|
| 301 | ## OK dash/mksh/zsh STDOUT:
|
| 302 | ## END
|
| 303 |
|
| 304 | #### ${v-foo} and ${v:-foo} when set -u
|
| 305 | set -u
|
| 306 | v=v
|
| 307 | echo v=${v:-foo}
|
| 308 | echo v=${v-foo}
|
| 309 | unset v
|
| 310 | echo v=${v:-foo}
|
| 311 | echo v=${v-foo}
|
| 312 | ## STDOUT:
|
| 313 | v=v
|
| 314 | v=v
|
| 315 | v=foo
|
| 316 | v=foo
|
| 317 | ## END
|
| 318 |
|
| 319 | #### array and - and +
|
| 320 | case $SH in (dash) exit ;; esac
|
| 321 |
|
| 322 | shopt -s compat_array # to refer to array as scalar
|
| 323 |
|
| 324 | empty=()
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| 325 | a1=('')
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| 326 | a2=('' x)
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| 327 | a3=(3 4)
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| 328 | echo empty=${empty[@]-minus}
|
| 329 | echo a1=${a1[@]-minus}
|
| 330 | echo a1[0]=${a1[0]-minus}
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| 331 | echo a2=${a2[@]-minus}
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| 332 | echo a3=${a3[@]-minus}
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| 333 | echo ---
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| 334 |
|
| 335 | echo empty=${empty[@]+plus}
|
| 336 | echo a1=${a1[@]+plus}
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| 337 | echo a1[0]=${a1[0]+plus}
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| 338 | echo a2=${a2[@]+plus}
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| 339 | echo a3=${a3[@]+plus}
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| 340 | echo ---
|
| 341 |
|
| 342 | echo empty=${empty+plus}
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| 343 | echo a1=${a1+plus}
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| 344 | echo a2=${a2+plus}
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| 345 | echo a3=${a3+plus}
|
| 346 | echo ---
|
| 347 |
|
| 348 | # Test quoted arrays too
|
| 349 | argv.py "${empty[@]-minus}"
|
| 350 | argv.py "${empty[@]+plus}"
|
| 351 | argv.py "${a1[@]-minus}"
|
| 352 | argv.py "${a1[@]+plus}"
|
| 353 | argv.py "${a1[0]-minus}"
|
| 354 | argv.py "${a1[0]+plus}"
|
| 355 | argv.py "${a2[@]-minus}"
|
| 356 | argv.py "${a2[@]+plus}"
|
| 357 | argv.py "${a3[@]-minus}"
|
| 358 | argv.py "${a3[@]+plus}"
|
| 359 |
|
| 360 | ## STDOUT:
|
| 361 | empty=minus
|
| 362 | a1=
|
| 363 | a1[0]=
|
| 364 | a2= x
|
| 365 | a3=3 4
|
| 366 | ---
|
| 367 | empty=
|
| 368 | a1=plus
|
| 369 | a1[0]=plus
|
| 370 | a2=plus
|
| 371 | a3=plus
|
| 372 | ---
|
| 373 | empty=
|
| 374 | a1=plus
|
| 375 | a2=plus
|
| 376 | a3=plus
|
| 377 | ---
|
| 378 | ['minus']
|
| 379 | []
|
| 380 | ['']
|
| 381 | ['plus']
|
| 382 | ['']
|
| 383 | ['plus']
|
| 384 | ['', 'x']
|
| 385 | ['plus']
|
| 386 | ['3', '4']
|
| 387 | ['plus']
|
| 388 | ## END
|
| 389 | ## N-I dash stdout-json: ""
|
| 390 | ## N-I zsh STDOUT:
|
| 391 | empty=
|
| 392 | a1=
|
| 393 | ## END
|
| 394 | ## N-I zsh status: 1
|
| 395 |
|
| 396 | #### $@ (empty) and - and +
|
| 397 | echo argv=${@-minus}
|
| 398 | echo argv=${@+plus}
|
| 399 | echo argv=${@:-minus}
|
| 400 | echo argv=${@:+plus}
|
| 401 | ## STDOUT:
|
| 402 | argv=minus
|
| 403 | argv=
|
| 404 | argv=minus
|
| 405 | argv=
|
| 406 | ## END
|
| 407 | ## BUG dash/zsh STDOUT:
|
| 408 | argv=
|
| 409 | argv=plus
|
| 410 | argv=minus
|
| 411 | argv=
|
| 412 | ## END
|
| 413 |
|
| 414 | #### $@ ("") and - and +
|
| 415 | set -- ""
|
| 416 | echo argv=${@-minus}
|
| 417 | echo argv=${@+plus}
|
| 418 | echo argv=${@:-minus}
|
| 419 | echo argv=${@:+plus}
|
| 420 | ## STDOUT:
|
| 421 | argv=
|
| 422 | argv=plus
|
| 423 | argv=minus
|
| 424 | argv=
|
| 425 | ## END
|
| 426 |
|
| 427 | # Zsh treats $@ as an array unlike Bash converting it to a string by joining it
|
| 428 | # with a space.
|
| 429 |
|
| 430 | ## OK zsh STDOUT:
|
| 431 | argv=
|
| 432 | argv=plus
|
| 433 | argv=
|
| 434 | argv=plus
|
| 435 | ## END
|
| 436 |
|
| 437 | #### $@ ("" "") and - and +
|
| 438 | set -- "" ""
|
| 439 | echo argv=${@-minus}
|
| 440 | echo argv=${@+plus}
|
| 441 | echo argv=${@:-minus}
|
| 442 | echo argv=${@:+plus}
|
| 443 | ## STDOUT:
|
| 444 | argv=
|
| 445 | argv=plus
|
| 446 | argv=
|
| 447 | argv=plus
|
| 448 | ## END
|
| 449 |
|
| 450 | #### $* ("" "") and - and + (IFS=)
|
| 451 | set -- "" ""
|
| 452 | IFS=
|
| 453 | echo argv=${*-minus}
|
| 454 | echo argv=${*+plus}
|
| 455 | echo argv=${*:-minus}
|
| 456 | echo argv=${*:+plus}
|
| 457 | ## STDOUT:
|
| 458 | argv=
|
| 459 | argv=plus
|
| 460 | argv=
|
| 461 | argv=plus
|
| 462 | ## END
|
| 463 | ## BUG mksh STDOUT:
|
| 464 | argv=
|
| 465 | argv=plus
|
| 466 | argv=minus
|
| 467 | argv=
|
| 468 | ## END
|
| 469 |
|
| 470 | #### "$*" ("" "") and - and + (IFS=)
|
| 471 | set -- "" ""
|
| 472 | IFS=
|
| 473 | echo "argv=${*-minus}"
|
| 474 | echo "argv=${*+plus}"
|
| 475 | echo "argv=${*:-minus}"
|
| 476 | echo "argv=${*:+plus}"
|
| 477 | ## STDOUT:
|
| 478 | argv=
|
| 479 | argv=plus
|
| 480 | argv=minus
|
| 481 | argv=
|
| 482 | ## END
|
| 483 |
|
| 484 | #### assoc array and - and +
|
| 485 | case $SH in (dash|mksh) exit ;; esac
|
| 486 |
|
| 487 | declare -A empty=()
|
| 488 | declare -A assoc=(['k']=v)
|
| 489 |
|
| 490 | echo empty=${empty[@]-minus}
|
| 491 | echo empty=${empty[@]+plus}
|
| 492 | echo assoc=${assoc[@]-minus}
|
| 493 | echo assoc=${assoc[@]+plus}
|
| 494 |
|
| 495 | echo ---
|
| 496 | echo empty=${empty[@]:-minus}
|
| 497 | echo empty=${empty[@]:+plus}
|
| 498 | echo assoc=${assoc[@]:-minus}
|
| 499 | echo assoc=${assoc[@]:+plus}
|
| 500 | ## STDOUT:
|
| 501 | empty=minus
|
| 502 | empty=
|
| 503 | assoc=v
|
| 504 | assoc=plus
|
| 505 | ---
|
| 506 | empty=minus
|
| 507 | empty=
|
| 508 | assoc=v
|
| 509 | assoc=plus
|
| 510 | ## END
|
| 511 |
|
| 512 | ## BUG zsh STDOUT:
|
| 513 | empty=
|
| 514 | empty=plus
|
| 515 | assoc=minus
|
| 516 | assoc=
|
| 517 | ---
|
| 518 | empty=minus
|
| 519 | empty=
|
| 520 | assoc=minus
|
| 521 | assoc=
|
| 522 | ## END
|
| 523 |
|
| 524 | ## N-I dash/mksh STDOUT:
|
| 525 | ## END
|
| 526 |
|
| 527 |
|
| 528 | #### Error when empty
|
| 529 | empty=''
|
| 530 | echo ${empty:?'is em'pty} # test eval of error
|
| 531 | echo should not get here
|
| 532 | ## stdout-json: ""
|
| 533 | ## status: 1
|
| 534 | ## OK dash status: 2
|
| 535 |
|
| 536 | #### Error when unset
|
| 537 | echo ${unset?is empty}
|
| 538 | echo should not get here
|
| 539 | ## stdout-json: ""
|
| 540 | ## status: 1
|
| 541 | ## OK dash status: 2
|
| 542 |
|
| 543 | #### Error when unset
|
| 544 | v=foo
|
| 545 | echo ${v+v is not unset} ${unset:+is not unset}
|
| 546 | ## stdout: v is not unset
|
| 547 |
|
| 548 | #### ${var=x} dynamic scope
|
| 549 | f() { : "${hello:=x}"; echo $hello; }
|
| 550 | f
|
| 551 | echo hello=$hello
|
| 552 |
|
| 553 | f() { hello=x; }
|
| 554 | f
|
| 555 | echo hello=$hello
|
| 556 | ## STDOUT:
|
| 557 | x
|
| 558 | hello=x
|
| 559 | hello=x
|
| 560 | ## END
|
| 561 |
|
| 562 | #### array ${arr[0]=x}
|
| 563 | arr=()
|
| 564 | echo ${#arr[@]}
|
| 565 | : ${arr[0]=x}
|
| 566 | echo ${#arr[@]}
|
| 567 | ## STDOUT:
|
| 568 | 0
|
| 569 | 1
|
| 570 | ## END
|
| 571 | ## N-I dash status: 2
|
| 572 | ## N-I dash stdout-json: ""
|
| 573 | ## N-I zsh status: 1
|
| 574 | ## N-I zsh STDOUT:
|
| 575 | 0
|
| 576 | ## END
|
| 577 |
|
| 578 | #### assoc array ${arr["k"]=x}
|
| 579 | # note: this also works in zsh
|
| 580 |
|
| 581 | declare -A arr=()
|
| 582 | echo ${#arr[@]}
|
| 583 | : ${arr['k']=x}
|
| 584 | echo ${#arr[@]}
|
| 585 | ## STDOUT:
|
| 586 | 0
|
| 587 | 1
|
| 588 | ## END
|
| 589 | ## N-I dash status: 2
|
| 590 | ## N-I dash stdout-json: ""
|
| 591 | ## N-I mksh status: 1
|
| 592 | ## N-I mksh stdout-json: ""
|
| 593 |
|
| 594 | #### "\z" as arg
|
| 595 | echo "${undef-\$}"
|
| 596 | echo "${undef-\(}"
|
| 597 | echo "${undef-\z}"
|
| 598 | echo "${undef-\"}"
|
| 599 | echo "${undef-\`}"
|
| 600 | echo "${undef-\\}"
|
| 601 | ## STDOUT:
|
| 602 | $
|
| 603 | \(
|
| 604 | \z
|
| 605 | "
|
| 606 | `
|
| 607 | \
|
| 608 | ## END
|
| 609 | ## BUG yash STDOUT:
|
| 610 | $
|
| 611 | (
|
| 612 | z
|
| 613 | "
|
| 614 | `
|
| 615 | \
|
| 616 | ## END
|
| 617 | # Note: this line terminates the quoting by ` not to confuse the text editor.
|
| 618 |
|
| 619 |
|
| 620 | #### "\e" as arg
|
| 621 | echo "${undef-\e}"
|
| 622 | ## STDOUT:
|
| 623 | \e
|
| 624 | ## END
|
| 625 | ## BUG zsh/mksh stdout-repr: '\x1b\n'
|
| 626 | ## BUG yash stdout: e
|
| 627 |
|
| 628 |
|
| 629 | #### op-test for ${a} and ${a[0]}
|
| 630 | case $SH in dash) exit ;; esac
|
| 631 |
|
| 632 | test-hyphen() {
|
| 633 | echo "a : '${a-no-colon}' '${a:-with-colon}'"
|
| 634 | echo "a[0]: '${a[0]-no-colon}' '${a[0]:-with-colon}'"
|
| 635 | }
|
| 636 |
|
| 637 | a=()
|
| 638 | test-hyphen
|
| 639 | a=("")
|
| 640 | test-hyphen
|
| 641 | a=("" "")
|
| 642 | test-hyphen
|
| 643 | IFS=
|
| 644 | test-hyphen
|
| 645 |
|
| 646 | ## STDOUT:
|
| 647 | a : 'no-colon' 'with-colon'
|
| 648 | a[0]: 'no-colon' 'with-colon'
|
| 649 | a : '' 'with-colon'
|
| 650 | a[0]: '' 'with-colon'
|
| 651 | a : '' 'with-colon'
|
| 652 | a[0]: '' 'with-colon'
|
| 653 | a : '' 'with-colon'
|
| 654 | a[0]: '' 'with-colon'
|
| 655 | ## END
|
| 656 |
|
| 657 | # Zsh's ${a} and ${a[@]} implement something different from the other shells'.
|
| 658 |
|
| 659 | ## OK zsh STDOUT:
|
| 660 | a : '' 'with-colon'
|
| 661 | a[0]: 'no-colon' 'with-colon'
|
| 662 | a : '' 'with-colon'
|
| 663 | a[0]: 'no-colon' 'with-colon'
|
| 664 | a : ' ' ' '
|
| 665 | a[0]: 'no-colon' 'with-colon'
|
| 666 | a : '' 'with-colon'
|
| 667 | a[0]: 'no-colon' 'with-colon'
|
| 668 | ## END
|
| 669 |
|
| 670 | ## N-I dash STDOUT:
|
| 671 | ## END:
|
| 672 |
|
| 673 |
|
| 674 | #### op-test for ${a[@]} and ${a[*]}
|
| 675 | case $SH in dash) exit ;; esac
|
| 676 |
|
| 677 | test-hyphen() {
|
| 678 | echo "a[@]: '${a[@]-no-colon}' '${a[@]:-with-colon}'"
|
| 679 | echo "a[*]: '${a[*]-no-colon}' '${a[*]:-with-colon}'"
|
| 680 | }
|
| 681 |
|
| 682 | a=()
|
| 683 | test-hyphen
|
| 684 | a=("")
|
| 685 | test-hyphen
|
| 686 | a=("" "")
|
| 687 | test-hyphen
|
| 688 | IFS=
|
| 689 | test-hyphen
|
| 690 |
|
| 691 | ## STDOUT:
|
| 692 | a[@]: 'no-colon' 'with-colon'
|
| 693 | a[*]: 'no-colon' 'with-colon'
|
| 694 | a[@]: '' 'with-colon'
|
| 695 | a[*]: '' 'with-colon'
|
| 696 | a[@]: ' ' ' '
|
| 697 | a[*]: ' ' ' '
|
| 698 | a[@]: ' ' ' '
|
| 699 | a[*]: '' 'with-colon'
|
| 700 | ## END
|
| 701 |
|
| 702 | # Bash 2.0..4.4 has a bug that "${a[@]:-xxx}" produces an empty string. It
|
| 703 | # seemed to consider a[@] and a[*] are non-empty when there is at least one
|
| 704 | # element even if the element is empty. This was fixed in Bash 5.0.
|
| 705 | #
|
| 706 | # ## BUG bash STDOUT:
|
| 707 | # a[@]: 'no-colon' 'with-colon'
|
| 708 | # a[*]: 'no-colon' 'with-colon'
|
| 709 | # a[@]: '' ''
|
| 710 | # a[*]: '' ''
|
| 711 | # a[@]: ' ' ' '
|
| 712 | # a[*]: ' ' ' '
|
| 713 | # a[@]: ' ' ' '
|
| 714 | # a[*]: '' ''
|
| 715 | # ## END
|
| 716 |
|
| 717 | # Zsh's ${a} and ${a[@]} implement something different from the other shells'.
|
| 718 |
|
| 719 | ## OK zsh STDOUT:
|
| 720 | a[@]: '' 'with-colon'
|
| 721 | a[*]: '' 'with-colon'
|
| 722 | a[@]: '' ''
|
| 723 | a[*]: '' 'with-colon'
|
| 724 | a[@]: ' ' ' '
|
| 725 | a[*]: ' ' ' '
|
| 726 | a[@]: ' ' ' '
|
| 727 | a[*]: '' 'with-colon'
|
| 728 | ## END
|
| 729 |
|
| 730 | ## N-I dash STDOUT:
|
| 731 | ## END:
|
| 732 |
|
| 733 |
|
| 734 | #### op-test for ${!array} with array="a" and array="a[0]"
|
| 735 | case $SH in dash|mksh|zsh) exit ;; esac
|
| 736 |
|
| 737 | test-hyphen() {
|
| 738 | ref='a'
|
| 739 | echo "ref=a : '${!ref-no-colon}' '${!ref:-with-colon}'"
|
| 740 | ref='a[0]'
|
| 741 | echo "ref=a[0]: '${!ref-no-colon}' '${!ref:-with-colon}'"
|
| 742 | }
|
| 743 |
|
| 744 | a=()
|
| 745 | test-hyphen
|
| 746 | a=("")
|
| 747 | test-hyphen
|
| 748 | a=("" "")
|
| 749 | test-hyphen
|
| 750 | IFS=
|
| 751 | test-hyphen
|
| 752 |
|
| 753 | ## STDOUT:
|
| 754 | ref=a : 'no-colon' 'with-colon'
|
| 755 | ref=a[0]: 'no-colon' 'with-colon'
|
| 756 | ref=a : '' 'with-colon'
|
| 757 | ref=a[0]: '' 'with-colon'
|
| 758 | ref=a : '' 'with-colon'
|
| 759 | ref=a[0]: '' 'with-colon'
|
| 760 | ref=a : '' 'with-colon'
|
| 761 | ref=a[0]: '' 'with-colon'
|
| 762 | ## END
|
| 763 |
|
| 764 | ## N-I dash/mksh/zsh STDOUT:
|
| 765 | ## END:
|
| 766 |
|
| 767 |
|
| 768 | #### op-test for ${!array} with array="a[@]" or array="a[*]"
|
| 769 | case $SH in dash|mksh|zsh) exit ;; esac
|
| 770 |
|
| 771 | test-hyphen() {
|
| 772 | ref='a[@]'
|
| 773 | echo "ref=a[@]: '${!ref-no-colon}' '${!ref:-with-colon}'"
|
| 774 | ref='a[*]'
|
| 775 | echo "ref=a[*]: '${!ref-no-colon}' '${!ref:-with-colon}'"
|
| 776 | }
|
| 777 |
|
| 778 | a=()
|
| 779 | test-hyphen
|
| 780 | a=("")
|
| 781 | test-hyphen
|
| 782 | a=("" "")
|
| 783 | test-hyphen
|
| 784 | IFS=
|
| 785 | test-hyphen
|
| 786 |
|
| 787 | ## STDOUT:
|
| 788 | ref=a[@]: 'no-colon' 'with-colon'
|
| 789 | ref=a[*]: 'no-colon' 'with-colon'
|
| 790 | ref=a[@]: '' 'with-colon'
|
| 791 | ref=a[*]: '' 'with-colon'
|
| 792 | ref=a[@]: ' ' ' '
|
| 793 | ref=a[*]: ' ' ' '
|
| 794 | ref=a[@]: ' ' ' '
|
| 795 | ref=a[*]: '' 'with-colon'
|
| 796 | ## END
|
| 797 |
|
| 798 | ## BUG bash STDOUT:
|
| 799 | ref=a[@]: 'no-colon' 'with-colon'
|
| 800 | ref=a[*]: 'no-colon' 'with-colon'
|
| 801 | ref=a[@]: '' ''
|
| 802 | ref=a[*]: '' ''
|
| 803 | ref=a[@]: ' ' ' '
|
| 804 | ref=a[*]: ' ' ' '
|
| 805 | ref=a[@]: ' ' ' '
|
| 806 | ref=a[*]: '' ''
|
| 807 | ## END
|
| 808 |
|
| 809 | ## N-I dash/mksh/zsh STDOUT:
|
| 810 | ## END:
|
| 811 |
|
| 812 |
|
| 813 | #### op-test for unquoted ${a[*]:-empty} with IFS=
|
| 814 | case $SH in dash) exit ;; esac
|
| 815 |
|
| 816 | IFS=
|
| 817 | a=("" "")
|
| 818 | argv.py ${a[*]:-empty}
|
| 819 |
|
| 820 | ## STDOUT:
|
| 821 | []
|
| 822 | ## END
|
| 823 |
|
| 824 | ## BUG mksh STDOUT:
|
| 825 | ['empty']
|
| 826 | ## END
|
| 827 |
|
| 828 | ## N-I dash STDOUT:
|
| 829 | ## END:
|